2003 3.4 supercharged tacoma with URD bigger injector kit, 190 walbro lph pump and methanol injection. I was driving the other day and it runs fine when i am not in boost and runs fine at idle around 15.0 when normally it runs at 14.7 AFR, but when i get anything over 2-3 psi it leans out super hardto 15.7-16.0 AFR. i replaced the fuel filter, still the same problem, replaced my fuel pump with the walbro 190lph and still have the same problem. could the fuel regulator be bad? if an injector was bad wouldnt it run like crap at idle.